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MA: Fachverband Magnetismus
MA 47: Poster III
MA 47.22: Poster
Thursday, March 21, 2024, 15:00–18:00, Poster D
Magneto-transport studies on altermagnetic CrSb — •S. Naduvile Thadathil1,2, M. Uhlarz1, M. C. Rahn2, T. Speliotis3, J. Wosnitza1,2, and T. Helm1 — 1Dresden High Magnetic Field Laboratory, HZDR — 2Institute of Solid State and Materials Physics, TU Dresden — 3Institute of Nanoscience and Nanotechnology, Demokritos, Greece
The recent discovery of a distinct magnetic phase called "altermagnetism" (AM) has been based on spin-symmetry groups. An anomalous Hall effect (AHE), as found in ferromagnets, has been predicted and observed in ruthenium dioxide (RuO2) despite the antiparallel magnetic order, which is linked to the AM. Here, we present results from magnetotransport studies on micron-sized structures cut from single crystals of CrSb. The magnetoresistance and the Hall effect were investigated between 1.8 and 300 K in fields up to 16 T for structures with current applied along the a and c axis. Below 3 K and at low magnetic fields, the longitudinal resistance for structures where the current is applied along the c axis exhibits a significant deviation from the field-dependent high-temperature quadratic behavior. We observed a significant AHE in CrSb. Interestingly, a planar Hall contribution is observed when the current is applied along the c axis of the crystal, which is absent for the current applied along the a axis. These findings may provide further evidence for the altermagnetic phase.
Keywords: Altermagnetism; CrSb